diff options
Diffstat (limited to 'arch/m68knommu/platform/68328/ints.c')
| -rw-r--r-- | arch/m68knommu/platform/68328/ints.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/arch/m68knommu/platform/68328/ints.c b/arch/m68knommu/platform/68328/ints.c deleted file mode 100644 index 865852806a1..00000000000 --- a/arch/m68knommu/platform/68328/ints.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * linux/arch/m68knommu/platform/68328/ints.c - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - * - * Copyright 1996 Roman Zippel - * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com> - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <asm/traps.h> -#include <asm/io.h> -#include <asm/machdep.h> - -#if defined(CONFIG_M68328) -#include <asm/MC68328.h> -#elif defined(CONFIG_M68EZ328) -#include <asm/MC68EZ328.h> -#elif defined(CONFIG_M68VZ328) -#include <asm/MC68VZ328.h> -#endif - -/* assembler routines */ -asmlinkage void system_call(void); -asmlinkage void buserr(void); -asmlinkage void trap(void); -asmlinkage void trap3(void); -asmlinkage void trap4(void); -asmlinkage void trap5(void); -asmlinkage void trap6(void); -asmlinkage void trap7(void); -asmlinkage void trap8(void); -asmlinkage void trap9(void); -asmlinkage void trap10(void); -asmlinkage void trap11(void); -asmlinkage void trap12(void); -asmlinkage void trap13(void); -asmlinkage void trap14(void); -asmlinkage void trap15(void); -asmlinkage void trap33(void); -asmlinkage void trap34(void); -asmlinkage void trap35(void); -asmlinkage void trap36(void); -asmlinkage void trap37(void); -asmlinkage void trap38(void); -asmlinkage void trap39(void); -asmlinkage void trap40(void); -asmlinkage void trap41(void); -asmlinkage void trap42(void); -asmlinkage void trap43(void); -asmlinkage void trap44(void); -asmlinkage void trap45(void); -asmlinkage void trap46(void); -asmlinkage void trap47(void); -asmlinkage irqreturn_t bad_interrupt(int, void *); -asmlinkage irqreturn_t inthandler(void); -asmlinkage irqreturn_t inthandler1(void); -asmlinkage irqreturn_t inthandler2(void); -asmlinkage irqreturn_t inthandler3(void); -asmlinkage irqreturn_t inthandler4(void); -asmlinkage irqreturn_t inthandler5(void); -asmlinkage irqreturn_t inthandler6(void); -asmlinkage irqreturn_t inthandler7(void); - -extern e_vector *_ramvec; - -/* The number of spurious interrupts */ -volatile unsigned int num_spurious; - -/* The 68k family did not have a good way to determine the source - * of interrupts until later in the family. The EC000 core does - * not provide the vector number on the stack, we vector everything - * into one vector and look in the blasted mask register... - * This code is designed to be fast, almost constant time, not clean! - */ -void process_int(int vec, struct pt_regs *fp) -{ - int irq; - int mask; - - unsigned long pend = ISR; - - while (pend) { - if (pend & 0x0000ffff) { - if (pend & 0x000000ff) { - if (pend & 0x0000000f) { - mask = 0x00000001; - irq = 0; - } else { - mask = 0x00000010; - irq = 4; - } - } else { - if (pend & 0x00000f00) { - mask = 0x00000100; - irq = 8; - } else { - mask = 0x00001000; - irq = 12; - } - } - } else { - if (pend & 0x00ff0000) { - if (pend & 0x000f0000) { - mask = 0x00010000; - irq = 16; - } else { - mask = 0x00100000; - irq = 20; - } - } else { - if (pend & 0x0f000000) { - mask = 0x01000000; - irq = 24; - } else { - mask = 0x10000000; - irq = 28; - } - } - } - - while (! (mask & pend)) { - mask <<=1; - irq++; - } - - do_IRQ(irq, fp); - pend &= ~mask; - } -} - -static void intc_irq_unmask(unsigned int irq) -{ - IMR &= ~(1<<irq); -} - -static void intc_irq_mask(unsigned int irq) -{ - IMR |= (1<<irq); -} - -static struct irq_chip intc_irq_chip = { - .name = "M68K-INTC", - .mask = intc_irq_mask, - .unmask = intc_irq_unmask, -}; - -/* - * This function should be called during kernel startup to initialize - * the machine vector table. - */ -void __init init_IRQ(void) -{ - int i; - - /* set up the vectors */ - for (i = 72; i < 256; ++i) - _ramvec[i] = (e_vector) bad_interrupt; - - _ramvec[32] = system_call; - - _ramvec[65] = (e_vector) inthandler1; - _ramvec[66] = (e_vector) inthandler2; - _ramvec[67] = (e_vector) inthandler3; - _ramvec[68] = (e_vector) inthandler4; - _ramvec[69] = (e_vector) inthandler5; - _ramvec[70] = (e_vector) inthandler6; - _ramvec[71] = (e_vector) inthandler7; - - IVR = 0x40; /* Set DragonBall IVR (interrupt base) to 64 */ - - /* turn off all interrupts */ - IMR = ~0; - - for (i = 0; (i < NR_IRQS); i++) { - set_irq_chip(irq, &intc_irq_chip); - set_irq_handler(irq, handle_level_irq); - } -} - |